[[!meta date="2018-03-10 21:35:40"]]
[[!meta author="Tyler Cipriani"]]
[[!meta copyright="""
Copyright &copy; 2018 Tyler Cipriani
"""]]
[[!meta title="Orion Cloud Complex"]]
[[!tag
photos
photos/70-200mm-f-2.8
photos/nikon-d610
]]

![[Small](https://photos.tylercipriani.com/thumbs/eb/aeedaa971eecf8ecc5a34bc50a3034/small.jpg) |
[Large](https://photos.tylercipriani.com/thumbs/eb/aeedaa971eecf8ecc5a34bc50a3034/large.jpg) |
[Medium](https://photos.tylercipriani.com/thumbs/eb/aeedaa971eecf8ecc5a34bc50a3034/medium.jpg) |
[Xlarge](https://photos.tylercipriani.com/thumbs/eb/aeedaa971eecf8ecc5a34bc50a3034/xlarge.jpg) |
[Original](https://photos.tylercipriani.com/thumbs/eb/aeedaa971eecf8ecc5a34bc50a3034/original.jpg)](https://photos.tylercipriani.com/thumbs/eb/aeedaa971eecf8ecc5a34bc50a3034/large.jpg)

Orion cloud complex from my back yard.

Equipment
---
* Nikon D610
* iOptron Skyguider Pro
* 11 Frames captured at ISO 800, 45 seconds, f/2.8
* Processed using all libre software.

Software
---
* Debian GNU/Linux buster
* Siril (GPLv3 license)
    * Global Star Alignment (deep sky)
    * Sum Stacking
    * Winsorized Sigma Clipping -- all images in sequence
    * Background Extraction
    * Color Calibration
    * Auto stretching
* Raw Therapee (GPLv3 license)
    * LAB noise reduction
    * Cropping
* GIMP 2.8 (GPLv3 license)
    * Saturation
    * Sharpening

EXIF |
--- | ---
ExposureTime | 42.2
FNumber | 2.8
FocalLength | 200.0 mm
CreateDate | 2018-03-10 21:35:40
Lens | 70-200mm f/2.8
ISO | 800
Model | NIKON D610
Make | NIKON CORPORATION

